Day 7 - Polar and Nonpolar Covalent Bonds 2

Edit 0 2 …
Rhode Island Department of Education
Lesson Plan
Lesson Title: Polar and Nonpolar Covalent Bonds 2

State Standards: (GLEs/GSEs)
GSE - PS1 (9-11) - 4

National Standards:


Context of Lesson:
This will be the second class on polarity. In this class we will go into more depth on polarity and the students will be completing a worksheet.

Opportunities to Learn:
Depth of Knowledge:
  • Level 1
    • Describe how electronegativities determine the distribution of charge in a polar molecule.
    • Label the positive and negative dipoles in a polar molecule.

Prerequisite Knowledge:
  • Periodic Table
  • Periodic Trends
  • Electronegativity
  • Covalent bonding

Plans for Differentiating Instruction:
The material in the beginning of this class will be presented in a lecture format. The students will then be working in partners on a worksheet. By working in partners the students will be able to teach each other.

Accommodations and modifications:
For the worksheets I would be able to modify the worksheet. I would modify the worksheet by taking out a few tricky questions that deal with dipole moments.

Environmental factors:
The students will be sitting in their normal groups. This will make it easier for the students to work with a partner on the worksheet.

Materials:

Objectives:
  • The students will describe how electronegativities determine the distribution of charge in a polar molecule.
  • The students will label the positive and negative dipoles in a polar molecule.

Instruction:
Opening:
  • Review yesterdays class.
    • Introduced to polar and nonpolar bonds.
      • Does anyone remember what the difference is between a polar and nonpolar bond?
        • We saw that the polarity is determined by the differences in electronegativity values which causes an unequal sharing of electrons.
        • Any examples that you remember?
        • Do you remember the electronegativity trends?

Engagement:
  • Lets look at a few more examples.
    • Get the students help to determine the polarity.
    • Take a close look at CF4
      • Direction of Dipole moment makes it nonpolar.
        • Look at a few other examples similar to this. (symmetric)
  • Pass out the worksheets.
    • Students can work with a partner.
    • I will be asking the students questions while they are working.
      • I will be walking around.
      • What is the difference in the electronegativities in the compound.
      • What is the needed difference to be polar.
      • What direction is the dipole moment in the compound.

Closure:
  • Today we learned more about polar bonds. In tomorrows class we will take a look at a few more forces which are connected to polarity.
    • We briefly mention a dipole moment today and will see that in more detail tomorrow.

Assessment:
The students will be assessed on a worksheet that will be completed in class.

Reflections:
(only done after lesson is enacted)


Student Work Sample 1 – Approaching Proficiency:

Student Work Sample 2 – Proficient:

Student Work Sample 3 – Exceeds Proficiency: